Universiti Sains Malaysia is a public university in Malaysia. There are three campuses: one on the island of Penang , one in Kelantan , and one in Nibong Tebal . There is offshore collaboration with KLE University, India offering the Doctor of Medicine undergraduate degree. USM plans to open a Global Campus located at Kuala Lumpur Education City . With around 28,300 postgraduate and undergraduate students in 2009, USM is one of the biggest universities in terms of enrollment in Malaysia. The number of lecturers is about 1,479, which leads to a student-lecturer ratio of around 19:1. Wikipedia.
Al-mulali U.,Universiti Sains Malaysia
Energy | Year: 2011
This study examines the impact of oil consumption on the economic growth of the MENA countries during the period 1980-2009. The panel model is employed in this study. Based on the cointegration test results, it was found that CO 2 emission, and oil consumption has a long run relationship with economic growth. Moreover, there is also a bi-directional Granger causality between oil consumption, CO 2 emission and economic growth in both the short run and the long run. The results of this study show clearly that oil consumption plays an important role in the economic growth of the MENA countries. © 2011 Elsevier Ltd. Source
Hena S.,Universiti Sains Malaysia
Journal of Hazardous Materials | Year: 2010
Adsorption capacity of Cr(VI) onto chitosan coated with poly 3-methyl thiophene synthesized chemically was investigated in a batch system by considering the effects of various parameters like contact time, initial concentration, pH and temperature. Cr(VI) removal is pH dependent and found to be maximum at pH 2.0. Increases in adsorption capacity with increase in temperature indicate that the adsorption reaction is endothermic. Based on this study, the thermodynamic parameters like standard Gibb's free energy (Δ G°), standard enthalpy (Δ H°) and standard entropy (Δ S°) were evaluated. Adsorption kinetics of Cr(VI) ions onto chitosan coated with poly 3-methyl thiophene were analyzed by pseudo-first-order and pseudo-second-order models. The Langmuir, Freundlich and Temkin isotherms were used to describe the adsorption equilibrium studies of chitosan coated with poly 3-methyl thiophene at different temperatures. Langmuir isotherm shows better fit than Freundlich and Temkin isotherms in the temperature range studied. The results show that the chitosan coated with poly 3-methyl thiophene can be efficiently used for the treatment of wastewaters containing chromium as a low cost alternative compared to commercial activated carbon and other adsorbents reported. In order to find out the possibility of regeneration and reuse of exhausted adsorbent, desorption studies were also performed. © 2010 Elsevier B.V. Source
Azamathulla H.M.,Universiti Sains Malaysia
Journal of Hydrology | Year: 2012
Local scour is crucial in the degradation of river bed and the stability of grade control structures, stilling basins, aprons, ski-jump bucket spillways, bed sills, weirs, check dams, etc. This short communication presents gene-expression programming (GEP), which is an extension to genetic programming (GP), as an alternative approach to predict scour depth downstream of sills. Published data were compiled from the literature for the scour depth downstream of sills. The proposed GEP approach gives satisfactory results (R 2=0.967 and RMSE=0.088) compared to the existing predictors (Chinnarasri and Kositgittiwong, 2008) with R 2=0.87 and RMSE=2.452 for relative scour depth. © 2012 Elsevier B.V. Source
Erejuwa O.O.,Universiti Sains Malaysia
International journal of biological sciences | Year: 2011
Diabetes mellitus is associated with deterioration of glycemic control and progressive metabolic derangements. This study investigated the effect of honey as an adjunct to glibenclamide or metformin on glycemic control in streptozotocin-induced diabetic rats. Diabetes was induced in rats by streptozotocin. The diabetic rats were randomized into six groups and administered distilled water, honey, glibenclamide, glibenclamide and honey, metformin or metformin and honey. The animals were treated orally once daily for four weeks. The diabetic control rats showed hypoinsulinemia (0.27 ± 0.01 ng/ml), hyperglycemia (22.4 ± 1.0 mmol/L) and increased fructosamine (360.0 ± 15.6 μmol/L). Honey significantly increased insulin (0.41 ± 0.06 ng/ml), decreased hyperglycemia (12.3 ± 3.1 mmol/L) and fructosamine (304.5 ± 10.1 μmol/L). Although glibenclamide or metformin alone significantly (p < 0.05) reduced hyperglycemia, glibenclamide or metformin combined with honey produced significantly much lower blood glucose (8.8 ± 2.9 or 9.9 ± 3.3 mmol/L, respectively) compared to glibenclamide or metformin alone (13.9 ± 3.4 or 13.2 ± 2.9 mmol/L, respectively). Similarly, glibenclamide or metformin combined with honey produced significantly (p < 0.05) lower fructosamine levels (301.3 ± 19.5 or 285.8 ± 22.6 μmol/L, respectively) whereas glibenclamide or metformin alone did not decrease fructosamine (330.0 ± 29.9 or 314.6 ± 17.9 μmol/L, respectively). Besides, these drugs or their combination with honey increased insulin levels. Glibenclamide or metformin combined with honey also significantly reduced the elevated levels of creatinine, bilirubin, triglycerides, and VLDL cholesterol. These results indicate that combination of glibenclamide or metformin with honey improves glycemic control, and provides additional metabolic benefits, not achieved with either glibenclamide or metformin alone. Source
Universiti Sains Malaysia | Date: 2013-08-27
The present invention relates to a system for producing L-homophenylalanine and a process for producing L-homophenylalanine using the system. The system and the process include monitoring and controlling of the reaction conditions (e.g., temperature and pH) to desired or predetermined values. The monitoring, adjusting and agitating steps provided by the method thereby result in a more complete conversion of the available substrate and produce a sufficient yield of L-homophenylalanine.